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Orthoclase
Orthoclase

Melanite
Melanite



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Orthoclase
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Melanite

Orthoclase and Melanite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Pearly
Subadamantine, Vitreous
1.2 Pleochroism
colorless.
Not Available
1.3 Dispersion
0.010.06
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004) More from other references
Translucent
1.5 Refractive Index
1.518-1.5361.855-1.895
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
Not Available
1.8 Birefringence
0.0050-0.0060Not Available
Achroite
0 0.296
1.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Translucent

Orthoclase and Melanite Optic Character

Orthoclase and Melanite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Orthoclase and Melanite Physical Properties like crystallographic symmetry, pleochroism,etc. in the crystal. Some of the optical properties are refractive index, luster, optic character, pleochroism etc. Prominent among these is Orthoclase and Melanite optic character. You might have noticed your gemologist rotating the gemstone while testing it. Rotating a gemstone along its optic axis helps in determining its optic character.

Orthoclase and Melanite Transparency

Similar to their colors, Orthoclase and Melanite transparency can also be used as criteria for their primary identification. Although transparency cannot be the only criteria for gemstone identification, it can efficiently used in gemstone grading. Talking about their transparency, Orthoclase is Gemmological Tables (2004) More from other references while Orthoclase is Gemmological Tables (2004) More from other references in appearance.